Curtain-fastening device



wk 24, 1925. Lszmes E. BRUNNER quaum msmime DEVICE I Fig I Filed Aug. 9, gszo QNVENTOR Patented Feb. 24, 1925.

UNITED STATES PATENT OFFICE.

EUGEN BRUNNER, OF FRIEDRIGI-ISHAFEN, GERMANY, ASSIGN'O'R TO FIRM: LUFT- SGHIFFBAU ZEPPELIN GESELLSOHAFT MI'I. BElSCHRANKTER HAFTU'N'G, OF FRIED- RIGHSHAFEN, GERMANY.

CURTAIN-FASTENING DEVICE.

Application filed August 9, 1920.

To all whom it may concern:

Be it known that I, EUGEN BRUNNER, a citizen of Switzerland, residing at Friedrichshafen, Germany, have invented certain new and useful Improvements in Curtain- Fastening Devices, of Which the following is a specification.

My invention refers to the fastening of curtains, window-coverings and the like to the bodies of motor cars, to the hulls of aircraft and the like.

Especially in the case of motor cars and aircraft great difiiculties often arise in fastening windows of celluloid, glass or other material in a. manner free from objections. Plates of brittle material always tend towards breakage when directly fastened, more especially at the edges. Fastening pliable material such as fabric, skins, paper and the like, for instance, to sheet metal frames by lacing is not to be recommended as no air-tight closure can thus be obtained. There also exists the danger of the pliable material being overstrained locally on the one hand and of creases ensuing on the other. A simple glueing, however, is not advisable for this reason that in severe cold a pliable material glued to metal, is apt to crack off easily.

My invention obviates these drawbacks by employing an intermediate strip c0117 sisting of pliable material and permanently fastened to the metal, wood or the like, such strip forming fastening means for the pane to be connected therewith. By this means variations in length, for instance in consequence of variations of temperature, are compensated by the elasticity of the intermediate strip without too much strain on the window. Violent motions and concussions which otherwise produce continual bending backwards and forwards of the inserted window in regard to the adjoining surfaces, are also taken up by the intermediate strip and are transmitted to the window itself only in a small degree. Should the window nevertheless be damaged, it can be replaced in a considerably simpler manner than in the case of a rigid fastening.

In the drawings attached to this specification and forming part thereof, two modi- Serial No. 402,494.

fications of an arrangement in accordance with my invention are illustrated by way of example. In the drawings Fig. 1 shows part of a window pane inserted in a metal frame, whilst Fig. 2 is a cross-section on the line 22 of Fig. 1,

Fig. 3 a partial View of a window pane of pliable material attached to a wooden wall and Fig. 4 the cross section on the line 4-4 of Fig. 3.

In the modification shown in Figs. 1 and 2, A is the celluloid or glass window. Intermediate strips B of textile material are glued on to it on both sides which on the other hand are fastened to the metal frame D of a car body or aircraft hull by means of bolts, washers and nuts C.

In Figs. 3 and 4 a blind window E, consisting of light-proof material, is connected with an intermediate strip F of textile material by a lacing or seam C. An airand light-proof connection is obtained by means of a covering strip H glued on and overlapping the joint. The intermediate strip F of textile material is attached to a wooden frame L by means of rivets J and a liner K.

I claim:

1. In an arrangement of the kind described in combination, a frame, a plate fitting in said frame with a clearance and an intermediate strip of pliable material rigidly fixed to said frame and serving for nonrigidly fastening said plate thereto.

2. In an arrangement of the kind described in combination, a frame, a plate fitting in said frame with a clearance and an intermediate strip of pliable material fixed to said frame by the aid of bolts and to said plate by sewing.

In an arrangement of the kind clescribed in combination, a frame, a plate adjoining said frame, an intermediate strip of pliable material fixed to said frame by the aid of bolts and to said plate by sewing and a covering strip attached to said intermediate strip and to said plate respectively and covering the joint.

In testimony whereof I aflix my signature.

EUGEN BRUNNER. 

